Blue betta (Betta smaragdina)

科: Osphronemidae

Blue bettaは東南アジアのメコン河流域（タイ、カンボジア、ラオス）に原生するやや攻撃的な肉食性の淡水魚（オスフロネムス科）。飼育難度は初心者向き程度です。

飼育条件

水温: 24–27 °C
pH: 6–8
GH硬度: 5–19 dGH
成魚の体長: 4.9–7 cm
最小水槽: 70 L
泳ぐ水層: Upper; surface-oriented
飼育難度: 簡単
性格: Semi-aggressive; one male per tank
原産地: 东南亚湄公河流域（泰国、柬埔寨、老挝）

種の概要

Betta smaragdina is a Osphronemidae. In the aquarium it stays semi-aggressive. Plan on 4.9–7 cm of adult fish at 24–27 °C. Related profiles: Betta imbellis, Betta splendens, Betta albimarginata.

原生環境

生息地: Clear streams, rivers and still waters
水流: Still to very gentle water
溶存酸素: Tolerates low oxygen

レイアウトと設備

底床: Smooth gravel and sand with open floor space
流木・石組: Driftwood, water-worn stones and shelters that mimic the native biotope
水草: Hardy plants on hardscape; keep the floor open

性格・餌・混泳

群泳性: Solitary, pairs or small groups
餌: Carnivore; quality prepared foods with variety; regular frozen or live foods
おすすめの混泳相手: Amur False Gudgeon — Similar size and water needs
Striped Bitterling — Similar size and water needs
Acheilognathus gracilis — Similar size and water needs
混泳しないほうがいい相手: Its own males — Territorial fighting
Long-finned fish — Prone to fin nipping
Fin-nipping species — Its fins become targets

繁殖と注意点

雌雄の違い: Males are typically slimmer and more intensely colored; females fuller-bodied
繁殖方法: Bubble nester; condition with rich foods and simulate seasonal changes

よくある質問

Blue bettaは飼育しやすい？

初心者でも安心。Semi-aggressive; one male per tank。Solitary, pairs or small groups。

Blue bettaの適水温と水質は？

24–27 °C が目安。急変を避け、Heater required for stable tropical warmth。

Blue bettaの大きさと水槽サイズは？

成魚は約 4.9–7 cm。Upper; surface-oriented。最小 70 L の水槽。

Blue bettaの餌は？

Carnivore; quality prepared foods with variety; regular frozen or live foods。1日2回の少量給餌が理想的。

Blue bettaは混泳できる？

Semi-aggressive; one male per tank；Solitary, pairs or small groups。向いているのはAmur False Gudgeon — Similar size and water needs, Striped Bitterling — Similar size and water needs, Acheilognathus gracilis — Similar size and water needs。Its own males — Territorial fighting, Long-finned fish — Prone to fin nipping, Fin-nipping species — Its fins become targetsは不向き。

Blue bettaの原産地は？

东南亚湄公河流域（泰国、柬埔寨、老挝）原産。Clear streams, rivers and still waters、Still to very gentle water。

Blue bettaは飛び出す？

驚くと跳ねる。密閉ふたを。

Blue bettaの繁殖は？

繁殖：Bubble nester; condition with rich foods and simulate seasonal changes。Males are typically slimmer and more intensely colored; females fuller-bodied。